LLWoff 1963 Journal Dec. 20 Our interesting item is the occurrence of at least six species of Picidae within 500 yards of each other (see species lists). The species seemed to be sharing foraging sites to a great extent - this would be interesting to study from an ecological view. Again flock of Chipping Sparrows with small numbers of Black-chinned Sparrows, Ruby-crowned Kinglets + Oregon Juncos moved through oaks & on ground. Drove back to Tabino Canyon to help Dick Root record Polioptila. Found both melanura + caerulea foraging together with no inter-specific aggression. Both species were apparently paired. Once heard series of melanura calls & saw two individuals in the 10 foot Palo Verde. From actions - partly hidden by branches - it appeared to Root & I that there was an attempted or successful mounting of one by the other. Noted that melanura forages from ground to tops of 10-20 foot Palo Verdes. Also in Fraxinus. Seemed to spend more time on ground than did caerulea, although caerulea did forage on ground. Caerulea tended to call at irregular intervals generally one or only a few calls during one bout.